Berlin 2014 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 69: Quantum effects: Interference and correlations II
Q 69.5: Talk
Friday, March 21, 2014, 17:30–17:45, DO26 208
Measurement of subradiance with classical sources — •Daniel Bhatti1, Steffen Oppel1, and Joachim von Zanthier1,2 — 1Institut für Optik, Information und Photonik, Universität Erlangen-Nürnberg, 91058 Erlangen — 2Erlangen Graduate School in Advanced Optical Technologies (SAOT), Universität Erlangen-Nürnberg, 91052 Erlangen
Super- and subradiance, i.e., the cooperative emission of spontaneous radiation by an ensemble of identical two-level atoms, is one of the intriguing problems in quantum optics. While superradiance is usually observed for ensembles occupying symmetric Dicke states, subradiance is typically attributed to systems in non-symmetric Dicke states [1]. Recently we showed that superradiance can be produced also with uncorrelated single photon emitters [2] as well as statistically independent incoherent classical sources, by repeated measurements of photons in the far field. This amounts to measuring the m-th order photon correlation function for N ≥ m emitters. Here we discuss that by the same technique we can observe also subradiance with incoherent classical sources.
[1] R. Wiegner, J. von Zanthier, G. S. Agarwal, Phys. Rev. A 84, 023805 (2011)
[2] R. Wiegner, S. Oppel, J. von Zanthier, G. S. Agarwal, ArXiv quant-ph/1202.0164 (2012)